Regulon (https://www.pistil.io/product/regulon-21-day-pill-combined-oral-contraceptive-for-birth-control-period-regulation) 21 Day Pill is a combined oral contraceptive used in Malaysia to prevent pregnancy and regulate menstrual cycles. It works by suppressing ovulation, thickening cervical mucus, and altering the uterine lining to reduce implantation chances. Regulon can help with heavy or irregular periods and provides reliable daily contraception when taken consistently. Doctor-led teleconsultations ensure safe, informed use, but it does not protect against STIs and requires prescription guidance for optimal results.